Sun Developer Network 공식 블로그

Request:

http://json-time.appspot.com/time.json?tz=US/Central

Response:

{
  "tz": "US\/Central", 
  "hour": 15, 
  "datetime": "Tue, 05 Aug 2008 15:02:27 -0500", 
  "second": 27, 
  "error": false, 
  "minute": 2
}

{
    "datatypes": {
        "aString":"C. Enrique Ortiz",
        "anArray":["tech","mobile","web", "apps"],
        "aInteger": 15569,
        "aLong": 1234567890,
        "aBoolean": true,
    }
}

/**
 * A data types class to use as example
 */
class DataTypes {
    public String   aString; // a string
    public String[] anArray; // an array
    public int      anInteger; // an integer
  //public double   aDouble; // double not supported on CLDC 1.0
    public long     aLong; // a long
    public boolean  aBoolean; // a boolean

    /**
     * An example multi-data type Class
     */
    public DataTypes(
            String   aString,
            String[] anArray,
            int      anInteger,
          //double   aDouble, // Not supported on CLDC 1.0
            long     aLong,
            boolean  aBoolean) {
        this.aString = aString;
        this.anArray = anArray;
        this.anInteger = anInteger;
      //this.aDouble = aDouble; // Not supported on CLDC 1.0
        this.aLong = aLong;
        this.aBoolean = aBoolean;
    }

    :
    :

}

/**
 * Serializes this DataTypes instance
 *
 * @return the serialized DataTypes as JSON text
 */
public String toJSON() {
    // Define an external an a nexted JSONObjects
    JSONObject outer = new JSONObject();
    JSONObject inner = new JSONObject();
    // Now generate the JSON output
    try {
        outer.put("datatypes", inner); // the outer object name
        inner.put("aString", aString); // a name/value pair
        JSONArray ja = new JSONArray();
        for (int i=0; i<anArray.length; i++) {
            ja.put(anArray[i]);
        }
        inner.put("anArray", ja); a name/value pair
        inner.put("anInteger", anInteger); a name/value pair
      //inner.put("aDouble", aDouble); // Not supported on CLDC 1.0
        inner.put("aLong", aLong); a name/value pair
        inner.put("aBoolean", aBoolean); a name/value pair
    } catch (JSONException ex) {
        // ...process exception
    }
    return outer.toString(); // return the JSON text
}

/**
 * Initializes this instance of UserInfo and de-serializes the
 *  input JSON string
 *
 * @param ji is the input JSON string
 */
public void fromJSON(String ji) {
    // First, clear the object.
    aString     = null;
    anArray     = null;
    anInteger   = 0;
  //aDouble     = 0.0; // Double not supported on CLDC 1.0
    aLong       = 0;
    aBoolean    = false;

    // Now initialize from JSON text.
    try {
        JSONObject outer = new JSONObject(ji); // the outer objet
        if (outer != null) {
            // Get the inner object and parse out the data
            JSONObject inner = outer.getJSONObject("datatypes");
            if (inner != null) {
                // Parse the name/value pairs
                aString = inner.getString("aString");
                JSONArray ja = inner.getJSONArray("anArray");
                if (ja != null) {
                    anArray = new String[ja.length()];
                    for (int i=0; i<ja.length(); i++) {
                        anArray[i] = (String) ja.get(i);
                    }
                }
                anInteger = inner.getInt("anInteger");
              //aDouble   = inner.getDouble("aDouble");
                aLong     = inner.getLong("aLong");
                aBoolean  = inner.getBoolean("aBoolean");
            }
        }
    } catch(Exception e) {
        // ...process exception
    }
}

// Create an initialize instance of DataTypes
DataTypes dt = new DataTypes(
  "C. Enrique Ortiz", // a String
  new String[] {"tech","mobile","web", "apps"},  // an Array
  15569,      // an int
//0.0,        // a double, not supported on CLDC 1.0
  1234567890, // a long
  true);      // a boolean

// Covert object to JSON
String j = dt.toJSON();
System.out.println("*** toJSON: " + j);

// Initialize object from JSON
System.out.println("*** fromJSON:");
dt.fromJSON(j);

// Dump to console to see if it worked
dt.dump();

/**
 * Dump DataTypes for debugging
 */
public void dump() {
    System.out.println("    aString: " + aString);
    if (anArray != null) {
        for (int i =0; i<anArray.length; i++) {
            System.out.println("    tag [" + i + "]: " + anArray[i]);
        }
    }
    System.out.println("    anInteger: "    + anInteger);
  //System.out.println("    aDouble: "      + aDouble);
    System.out.println("    aLong: "        + aLong);
    System.out.println("    aBoolean: "     + aBoolean);
}